package 剑指offer;

import common.ListNode;

/**
 * @author zhangjunfei
 * @date 2023/7/20 16:01
 */
public class O_25 {

    public ListNode mergeTwoLists(ListNode l1, ListNode l2) {
        ListNode head = new ListNode();
        ListNode temp = head;

        while (l1 != null && l2 != null) {
            if (l1.val < l2.val) {
                temp.next = l1;
                l1 = l1.next;
            } else {
                temp.next = l2;
                l2 = l2.next;
            }
            temp = temp.next;
        }
        if (l1 == null) {
            temp.next = l2;
        }else{
            temp.next = l1;
        }
        return head.next;
    }
}
